Home / 15,658,971.60-21,609,334.08-8,690,698.74

Finding the Fourth Proportional to 15,658,971.60, 21,609,334.08 and 8,690,698.74

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Solution

The fourth proportional to 15,658,971.60, 21,609,334.08 and 8,690,698.74 is: 11,993,138.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,658,971.60 : 21,609,334.08 = 8,690,698.74 : x
  2. Step 2: Convert to fraction form
    15,658,971.60/21,609,334.08 = 8,690,698.74/x
  3. Step 3: Cross multiply
    15,658,971.60x = 21,609,334.08 × 8,690,698.74
  4. Step 4: Simplify right side
    15,658,971.60x = 187,800,212,461,295.06
  5. Step 5: Solve for x
    x = 187,800,212,461,295.06/15,658,971.60
  6. Step 6: Final answer
    x = 11,993,138.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.